The Yoshi's Island stage is a basic bi-level level with one platform at the top which tilts slightly at random to various degrees. To the side, sometimes a Support ghost will appear giving you a small platform to jump onto if you wouldnt be able to reach the stage to recover in time

The level however has its own quirk of having the background change to utilise the four seasons; Spring, Summer, Autumn & Winter. These themselves have no effect on the battle but rather are a somewhat cool aesthetic change